A5032593870- Forest Insect Ecology and Management
- Entomopathogenic Microorganisms in Pest Control
- Insect-Plant Interactions and Control
- Scarabaeidae Beetle Taxonomy and Biogeography
- Insect behavior and control techniques
- Hymenoptera taxonomy and phylogeny
- Insect Pest Control Strategies
- Yeasts and Rust Fungi Studies
- Coleoptera: Cerambycidae studies
- Date Palm Research Studies
- Biological Control of Invasive Species
- Coleoptera Taxonomy and Distribution
- Phytoplasmas and Hemiptera pathogens
- Plant and soil sciences
- Plant Pathogens and Fungal Diseases
- Insect Resistance and Genetics
- Insect Utilization and Effects
- Insect and Arachnid Ecology and Behavior
- Insect Pheromone Research and Control
- Insect and Pesticide Research
- Ecology and Vegetation Dynamics Studies
- Mediterranean and Iberian flora and fauna
- Cocoa and Sweet Potato Agronomy
- Insect symbiosis and bacterial influences
- Research on scale insects
Okinawa Prefectural Agricultural Research Center
1994-2022
This paper presents the first case of successful eradication a Coleoptera pest species over wide area using combination male annihilation technique (MAT) and sterile insect (SIT) application. The sweet potato weevil, Cylas formicarius, is one most destructive widely distributed pests potato, Ipomoea batatas. A project to eradicate it was launched in 1994 on Kume Island, Okinawa Prefecture, Japan. MAT application used from November January 1999 reduce density wild populations. distribution...
Abstract Although in mark‐recapture experiments traps are useful to estimate the dispersal distance of organisms, they cause a dilemma that may be called kind Heisenberg effect: large number should placed yield precise mean distance, while these shorten itself by intercepting organisms have dispersed for further distances. We propose procedure solve this placing uniformly lattice pattern, and assuming random movement constant rate settlement organisms. applied sugarcane wireworm Melanotus...
The cytochrome oxidase subunit I gene in mitochondrial DNA of 53 larvae Contarinia maculipennis Felt from flower buds various host plants, collected Hawaii, Japan and Thailand was analysed. Monophyly the clade including C. supported. There no sequential variation within specimens Hawaii Japan, which differed one another by 6 bp (1.37%). Three haplotypes were recognized but differences Hawaiian Japanese small. Overall, there 146 deduced amino acid residues. It is therefore concluded that a...
The location and preference of adult Asian citrus psyllid, Diaphorina citri Kuwayama, a vector the huanglongbing (greening disease) Liberobacter asiaticum, on two host plants, Murraya exotica L. Citrus depressa Hayata, were investigated in Okinawa Prefecture, Japan. While adults D. found all parts C. tree M. tree, eggs most nymphs young shoots leaves. We suggest that it is possible to save labor investigation control psyllid by attentively checking exotica. Investigation distribution...
Abstract An eradication project against the sweetpotato weevil, Cylas formicarius ( Fabricius) (Coleoptera: Brentidae), one of most important pests sweet potato in world, was initiated Oct. 2007 on Tsuken Island, Okinawa Prefecture, Japan. The sterile insect technique (SIT) and male annihilation (MAT) were employed as main control measures to suppress ultimately eradicate wild populations by impeding normal mating. In addition, two monitoring methods (host plant survey trap survey) used...
Abstract The effect of irradiation on the dispersal ability males and females flightless West Indian sweetpotato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), a major sweet potato pest, was examined in field using mark–release–recapture techniques. To evaluate we released 7 619 weevils two replicates (July August 2007). Each replicate lasted 5 days from release to sampling consisted one weevil samplings. Thirty‐two traps were placed lines corresponding eight compass...
沖縄県内においてミカンキジラミ成虫(Diaphorina citri Kuwayama)を採集し,PCR検定によりカンキツグリーニング病(以下:HLB)保毒虫の分布と発生状況を調査した。分布調査の結果,これまでHLBの発生が確認されていない南大東島と北大東島では保毒虫は検出されなかった。しかし,HLBの発生が確認されている沖縄島,石垣島,宮古島,与那国島,伊是名島および伊平屋島では保毒虫が検出され,保毒虫率はゲッキツでは0～21.0%,カンキツ類では9.6～48.4%であった。本病に罹病しないとされるゲッキツ上にも保毒虫が確認されたことから,ミカンキジラミ成虫はカンキツ類からゲッキツへと移動していることが示唆された。また2002年2月～2004年1月にかけて3～5ヶ月ごとに行った定期調査の結果,保毒虫の明確な季節的変動は確認されなかった。
カンキツグリーニング病を媒介するミカンキジラミの発生抑制を考える上で,カンキツに登録のある殺虫剤,殺ダニ剤等既存の剤の組み合わせによって防除体系を作ることができれば周年ミカンキジラミの発生を防ぐことが可能になる。そこで14種類の殺虫剤(一部未登録)をミカンキジラミに対して浸漬,散布あるいは樹幹塗布処理して,その後の死亡虫数を実験的に調べた。その結果,DMTP乳剤とMEP乳剤は幼虫,成虫に対して処理1日後に90～100%の死亡率が得られ,速効的でかつ高い殺虫効果があると判断された。一方,イミダクロプリド顆粒水和剤とチアメトキサム顆粒水和剤は幼虫,成虫ともに処理5日後には100%の死亡率に達し,殺虫効果は高いがやや遅効的であった。これら2剤は残効が比較的長いことから防除体系の中心に位置づける剤であると考えられる。今後野外での防除効果の解明や登録に向けた調査が期待される。